Spinning frame



Sept 1941' W. s. EASTMAN 2,257,045

SPINNING FRAME Filed Feb. 6, 1941 Patented Sept. 23, 194-1 SPINNINGFEAR/IE Walter S. Eastman, Glendale, R. 1., assignor to StillwaterWorsted Mills, a corporation of Rhode Island Application February 6,1941, Serial No. 377,633

17 Claims. (;Cl. 19-130) My invention relates to spinning frames.

It has among its objects to provide an improved pressure mechanismtherefor of the type adapted to divorce the twisting of the yarn fromthe drafting function of the front rolls. A further object is to providean improved pressure mechanism of this type having an improved resilientpressure plate and having this plate so mounted in an improved manner asto enable the plate to fit the top front roll very closely in such animproved manner as to increase the effectiveness of the pressuremechanism while also adapting it to use with top front rolls of variousforms without loss of effectiveness. A still further object of myinvention is to provide such an improved plate structure which, whilehaving the above advantages, also may be produced markedly lessexpensively than the rigid plates heretofore provided. These and otherobjects and advantages of my improvements will, however, hereinaftermore fully appear.

In the accompanying drawing, I have shown for purposes of illustrationone embodiment which my invention may assume in practice.

In this drawing,

Figure l is an end elevation of a spinning frame equipped with myimprovements;

Fig. 2 is 'a partial front elevation of such a frame Fig. '3 is asectional view on line 3-3 of Figure '1;

Fig. 4 is an enlarged end elevation of my improved pressure means inoperative position, and

Fig. 5 is an enlarged perspective view of the same, the parts thereofbeing shown vertically spaced prior to assembly in order to facilitateillustration.

In this illustrative construction, I have shown a spinning frame ofstandard form including a usual carriage stand I having usual draftingmechanism thereon including lower front fluted rolls .2 and cooperatingtop front rolls 3, herein cork covered, as well as usual closed 'pigtailguides 4 disposed above the caps 5 of usual whirled bobbins 6; a usualpressure frame I being provided for each pair of rolls 2, 3 and normallybiased to operative position and pivoted at 8 on the front saddle bar '5of the stand I, while the pressure means, carried as usual on the frontend of the frame I, are of an improved construction and cooperate in animproved manner with the roll 3, all as hereinaftermore fully described.7

Referring more particularly to these pressure means, it will be notedthata resilient pressure plate Ill is provided for cooperating with eachupper front roll 3. This plate H is preferably formed of suitableresilient sheet material such for example as spring steel and ispreferably also of the same width as the roll 3 and also flexible andadapted to conform to the bottom of roll '3 over a substantial lengthwhen pressing the yarn against the latter roll, as shown in Figure 1. Asshown in Figure 5, this plate H1 is normally flat and also longer thanthe rigid plates heretofore provided. It also is provided with likecurved extensions I I and I2 on its front and rear edges. Herein, theseextensions are each bent downwardly and inwardly from the same sheetforming the body of the plate ill in such manner as to provide a frontyarn supporting surface l3 along the front edge of the plate,corresponding to the enlarged rigid curved lip heretofore provided onrig-id plates, and a corresponding and identical surface I4 on the rearedge of the plate adapted to function either as front or rear portion ashereinafter described. Further, it will be observed that oppositelydirected spring flanges 15 are also provided on the extensions ll, l2below these surfaces and spaced below each end of the body portion ofthe plate It. 1

Spaced below the plate I'D is also a normally flat supporting plate I6,preferably also of suitable spring metal and of the same width as theplate It; this plate I6 herein being carried on the front end of theframe 1 and carrying the plate l0 and pressing the latter against theroll due to the action of the frame I. As shown, the plate l5 isprovided with a round aperture I'I spaced centrally from its sides andends and adapted to receive therein and to be supported on, the upperend of the usual ball it provided on the usual upstanding front end ofthe pressure frame "I. As shown, this plate It is also provided at itsopposite ends with upwardly and outwardly angularly directed end flangesl9 received in the curvedextensions H 12 on the plate It and underlyingand engaging and supporting inner curved faces of the tops of theseextensions, while the flanges 15 on these extensions support the platel6 below these flanges Hi.

In the operation of my improved construction, due to the provision ofthe improved sprin plate Ill and the action of the pressure frame 1, theplate It is flexed to conform to the adjacent portion of the peripheryof the roll 3 when pressed against the latter. Thus, a desirable closefit between the plate It and the roll is obtainedin such manner as tomaintain the fibres 14 on the extension l2 acts to direct the yarnbetween the roll 3 and the plate Ill, while the front yarn supportingsurface l3 acts to support the yarn when free from pressure in suchmanner as to space the beginning of twist from the point where the yarnemerges from between the roll 3 and plate H] as usual in such devices,so

that the beginning of twist is located directly above the closed pigtailguide 4 in the desired manner. Due to the mounting of the plate on thesupporting member [6, and the mounting of the latter on the ball IE, itwill also be apparent that the plate In is properly supported at itsopposite ends and that the two members l0 and I5 are free to accommodatethemselves to one another in different relations, while being maintainedin assembled relation by the action of the flanges l5. The universalsupport for the plate I6 is also such as to maintain the plate In in thedesired relation to the bottom of the roll 3 throughout the operationof. the mechanism. It will also be apparent that the plate- It] beingsomounted is thus adapted to cooperate with rolls 3 of varyingcharacter.

As a result of my improvements, it is made possible, while obtaining theabove advantages,

. also to produce the plates very inexpensively as V two-piececonstruction of the parts l0 and I6 also makes it possible to replaceeither of these elements independently of the other when desired. Theseand other advantages of my improvements will, however, be apparent tothose skilled in the art. I

While I have in this application described one embodiment which myinvention may assume in practice, it will be understood that the same isshown for purposes of-illustration, and that the invention may bemodified and embodied in various other forms without departing from itsspirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. In a spinning frame, cooperating front drafting rolls, and resilientyarn engaging means flexed against the upper front roll for supportingand pressing the yarn against said roll as the yarn passes from betweenthe nip of said rolls.

2. In a spinning frame, cooperating front drafting rolls, and elongatedyarn engaging and supporting means extending from adjacent the nip ofsaid rolls across beneath the topfront roll and having a flexibleportion pressing theyarn against the bottom of the latter roll.

3. In a spinning frame, cooperating front drafting rolls, and mechanismfor divorcing the conforming to the bottom of the top front roll andhaving longitudinally spaced end supports.

5. In a spinning frame, cooperating front drafting rolls, and mechanismfor divorcing the twisting of the yarn from the drafting function ofsaid rolls including a resilient pressure sheet flexed by and conformingto the bottom of the top front roll and having a bent extension forminga yarn support during twisting.

6. In a spinning frame, cooperating front drafting rolls, and. mechanismfor divorcing the twisting of the yarn from the drafting function ofsaid rolls including a resilient pressure sheet conforming to the bottomof the top front roll having depending ends and an underlying supportingmember having its ends received in said ends.

7. In a spinning frame, cooperating front drafting rolls, and mechanismfor divorcing the twisting of the yarn from the drafting function ofsaid rolls including a resilient pressure plate conforming to the bottomof the top front roll, and longitudinally spaced end supports thereforincluding an underlying supporting member supporting the ends thereof.

8. In a spinning frame, cooperating front drafting rolls, and mechanismfor divorcing the twisting of the yarn from the drafting function ofsaid rolls including a resilient pressure plate conforming to the bottomof the top front roll and having longitudinally spaced dependingextensions at its ends, and an underlying supporting member having itsends slidably carrying said extensions. r

9. In a spinning frame, cooperating front drafting rolls, and mechanismfor divorcing the twisting of the yarn from the drafting function ofsaid rolls including a resilient pressure plate conforming to the bottomof the top front roll and having longitudinally spaced dependingextensions at its ends, and an underlying supporting member havingupturned ends supported by said depending extensions and supportingopposite ends of said pressure plate.

10. In a spinning frame, cooperating front drafting rolls, and mechanismfor divorcing the twisting of the yarn from the drafting function ofsaid rolls including a resilient pressure plate conforming to the bottomof the top front roll and having longitudinally spaced ends, anunderlying supporting member supporting the ends of said pressure plate,apressure frame carrying said supporting member and biasing said plateinto operative position, and a universal joint between said supportingmember and frame.

11. In a spinning frame, cooperating front drafting rolls, and mechanismfor divorcing the twisting of the yarn from the drafting function ofsaid rolls including a resilient pressure sheet conforming to the bottomof the top front roll, a supporting sheet underlying said pressure sheetand having its ends supporting the ends of said pressure sheet, andconnections between the ends of said plates for permitting relativemovement between said sheets upon variations in flexing of said pressuresheet. 12. A pressure member for spinning frames comprising a resilientyarn supporting and pressing plate having supports at its ends, and anintermediate resilient portion adapted to be flexed by and conform tothe surface of a roll.

13. A pressure member for spinning frames comprising a resilient yarnsupporting and pressing plate having supports at its ends and having anoutwardly and downwardly curved yarn supporting extension at one end.

14. A pressure mechanism for spinning frames comprising a resilient yarnsupporting and pressing plate having supports at its ends and anintermediate resilient portion adapted to be flexed by and conform tothe surface of a roll, and supporting means for said plate supportingsaid ends.

15. A pressure mechanism for spinning frames comprising upper resilientand lower more rigid supporting members disposed in spaced relation andconnected at their ends and having said pressure member adapted to flexbetween its ends toward and from said supporting member.

16. A pressure mechanism for spinning frames comprising a resilient yarnsupporting and pressing plate having supports at its ends and anintermediate resilient portion adapted to be flexed by and conform tothe surface of a roll, and supporting means for said plate having meanssupporting said ends while permitting movement of said ends relative tosaid supporting means during flexing of said plate.

1'7. A pressure mechanism for spinning frames comprising a resilientyarn supporting and pressing plate having supports at its ends, anintermediate resilient portion adapted to be flexed by and conform tothe surface of a roll, and depending rounded extensions having inturnedflanges spaced below said pressure plate, and a supporting plate spacedbelow said pressure plate and supported by said flanges and havingupstanding portions thereon supporting the ends of said pressure plate.

WALTER S. EASTMAN.

